An exhaust flame arrester, an explosion-proof diesel engine, and mining auxiliary transportation equipment.

Abstract

This utility model discloses an exhaust flame arrestor, an explosion-proof diesel engine, and a mining auxiliary transportation device, relating to the technical field of mining auxiliary transportation equipment. To address the problems of time-consuming, labor-intensive, and unsafe cleaning methods for exhaust flame arrestors, the exhaust flame arrestor includes: a flame arrestor frame; a fixed explosion-proof plate assembly disposed within the flame arrestor frame; a movable explosion-proof plate assembly, removable and disposed within the flame arrestor frame, with the movable and fixed explosion-proof plate assemblies arranged crosswise, and the gap between them forming an exhaust channel; and a spacer assembly disposed within the exhaust channel, with the projection portions of the spacer assembly and the movable explosion-proof plate assembly overlapping in the direction perpendicular to the plate surface of the spacer assembly. This configuration allows for cleaning directly by pulling out the movable explosion-proof plate assembly without disassembling the entire exhaust flame arrestor, which is convenient and quick, reducing labor intensity and effectively improving cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary transportation equipment for mines, and more specifically, to an exhaust fire arrester, an explosion-proof diesel engine, and auxiliary transportation equipment for mines. Background Technology

[0002] Explosion-proof diesel engines for mining are widely used in auxiliary transportation applications such as monorail cranes, tracked transport vehicles, trackless rubber-tired vehicles, and support transport vehicles in coal mines. When these devices operate in the coal mine environment, their engine exhaust may contain flames, posing a safety hazard if directly emitted into the mine tunnels. Therefore, explosion-proof diesel engines must be equipped with exhaust flame arresters to eliminate exhaust flames and achieve explosion protection. Existing exhaust flame arresters typically use an integral frame structure, where the plate-type explosion-proof plates and spacers are fixed and non-removable. The entire structure weighs approximately 30 kg, is 50 mm thick, and consists of multiple 1 mm thick explosion-proof plates arranged side-by-side with a 0.5 mm gap between adjacent plates, through which engine exhaust is discharged. However, carbon particulate matter in the engine exhaust mixes with the cooling water in the exhaust water wash box to form a sludge-like substance. This sludge flows with the exhaust gas and adheres to the explosion-proof plates, gradually clogging the gaps. This leads to poor engine exhaust, affecting normal engine operation and causing problems such as abnormal exhaust temperature, reduced power, and excessive exhaust smoke.

[0003] Existing methods for cleaning exhaust flame arresters require removing the entire flame arrester assembly from the explosion-proof diesel engine exhaust gas treatment box and cleaning it with downhole compressed air or a high-pressure water gun. After cleaning, the flame arrester assembly is then reinstalled onto the exhaust gas treatment box. This disassembly and cleaning process not only consumes a lot of manpower and time but also increases the complexity and safety risks of the operation.

[0004] When flame arresters become clogged, the small gaps between the explosion-proof discs prevent the removal of particles from the inner wall of the discs by compressed air or high-pressure water. In such cases, due to the limitations of the underground coal mine environment, the flame arresters must be brought to the surface for cleaning using methods such as burning or ultrasonic cleaning. These operation and maintenance methods are not only complex but also inconvenient, severely hindering the widespread application of explosion-proof diesel engine-assisted transport equipment in coal mines.

[0005] Therefore, how to solve the problem that the existing cleaning methods for exhaust fire arresters are time-consuming, labor-intensive, and not very safe is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an exhaust fire barrier that can be cleaned directly by pulling out the movable explosion-proof plate assembly without disassembling the entire exhaust fire barrier. This is convenient and quick, greatly simplifies the cleaning process, reduces the labor intensity of cleaning, and also reduces the safety risks that may arise from disassembling the entire exhaust fire barrier for cleaning, thereby improving the safety of cleaning.

[0007] Another objective of this invention is to provide an explosion-proof diesel engine including the aforementioned exhaust flame arrester, thereby improving the maintenance efficiency of the explosion-proof diesel engine and reducing maintenance costs.

[0008] Another objective of this invention is to provide a mining auxiliary transportation device that includes the aforementioned explosion-proof diesel engine, thereby improving the utilization rate and production efficiency of the equipment.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An exhaust flame arrester, comprising:

[0011] Fire barrier frame;

[0012] The explosion-proof plate assembly is fixed and located within the fire-arresting grid frame;

[0013] The movable explosion-proof plate assembly is retractable and installed inside the fire-resistant grid frame. The movable explosion-proof plate assembly and the fixed explosion-proof plate assembly are arranged alternately, and the gap between them is used to form an exhaust channel.

[0014] The spacer assembly is located in the exhaust channel, and the spacer assembly overlaps with the movable explosion-proof plate assembly in the direction perpendicular to the plate surface of the spacer assembly.

[0015] Preferably, at least two sets of spacer assemblies are provided, and at least two sets of spacer assemblies are spaced apart along the pull-out direction of the movable explosion-proof sheet assembly.

[0016] Preferably, it also includes a limiting plate, which is detachably disposed on the movable explosion-proof plate assembly and movable between two adjacent sets of spacer assemblies, for limiting the pull-out stroke of the movable explosion-proof plate assembly.

[0017] Preferably, the limiting plate is snapped into the movable explosion-proof plate assembly. The movable explosion-proof plate assembly is provided with a snap-fit ​​groove for snapping into the limiting plate. The limiting plate is provided with a plurality of first slots that cooperate with the movable explosion-proof plate assembly, and a plurality of second slots for allowing the fixed explosion-proof plate assembly to pass through. The first slots and the second slots are arranged intersectingly, and their openings are connected to the same side edge of the limiting plate.

[0018] Preferably, the interval between two adjacent first slots and second slots is the same, and the extension length of the second slot on the limiting plate is greater than the extension length of the first slot on the limiting plate.

[0019] Preferably, the movable explosion-proof plate assembly includes a plurality of first explosion-proof plates arranged in parallel and a first fixing plate for fixing the first explosion-proof plates. The first fixing plate is provided with a plurality of first positioning holes arranged at equal intervals for installing the first explosion-proof plates. The first fixing plate is connected to the fire-resistant grid frame by fixing bolts.

[0020] Preferably, the fixed explosion-proof plate assembly includes a plurality of second explosion-proof plates arranged in parallel and a second fixing plate for fixing the second explosion-proof plates. The second fixing plate is provided with a plurality of second positioning holes arranged at equal intervals for installing the second explosion-proof plates. The second fixing plate is connected to the fire-resistant grid frame.

[0021] Preferably, the partition plate assembly includes multiple partition plates arranged in parallel and a base plate for fixing the partition plates. The base plate is provided with multiple equally spaced third positioning holes for installing the partition plates, and the base plate is detachably connected to the fire barrier frame.

[0022] An explosion-proof diesel engine, comprising the exhaust flame arrester grille described in any of the preceding claims.

[0023] A mining auxiliary transportation device includes the aforementioned explosion-proof diesel engine.

[0024] This utility model provides an exhaust flame arrestor grid, comprising a flame arrestor grid frame, a fixed explosion-proof disc assembly, a movable explosion-proof disc assembly, and a spacer assembly. Specifically, the flame arrestor grid frame serves as the basic structure of the entire device, providing stable support and ensuring the structural integrity and stability of the entire flame arrestor grid assembly during operation. The fixed explosion-proof disc assembly is located within the flame arrestor grid frame, ensuring the fixation and stability of its position. The movable explosion-proof disc assembly is intersected with the fixed explosion-proof disc assembly, and the gap between them forms an exhaust channel. The spacer assembly is located within the exhaust channel, precisely controlling the size of the gap in the exhaust channel so that the flame within the exhaust gas can be effectively isolated when it passes through the exhaust channel of the exhaust flame arrestor grid, meeting explosion-proof requirements and improving equipment safety. The projection portions of the spacer assembly and the movable explosion-proof disc assembly in the direction perpendicular to the plate surface of the spacer assembly overlap, meaning that the spacer assembly only occupies a portion of the spacer surface. Partial exhaust channels allow the remaining exhaust channels to function as explosion-proof channels. The movable explosion-proof plate assembly is retractable within the flame arrestor frame. When the movable explosion-proof plate assembly is pulled outward, relative displacement occurs between it and the fixed explosion-proof plate assembly, allowing some carbon soot and sludge to be cleaned from between them. Simultaneously, relative displacement occurs between the movable explosion-proof plate assembly and the spacer assembly, and under the action of the spacer assembly, carbon soot and sludge adhering to the movable explosion-proof plate assembly are cleaned, thus achieving the self-cleaning function of the movable explosion-proof plate assembly. This makes cleaning the exhaust flame arrestor very convenient. Users can clean it directly by pulling out the movable explosion-proof plate assembly without disassembling the entire exhaust flame arrestor, which is convenient, quick, and greatly simplifies the cleaning process. It not only reduces the labor intensity of cleaning but also reduces the safety risks that may arise from disassembling the entire exhaust flame arrestor for cleaning, thereby improving the safety of cleaning. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A schematic diagram of the cleaned state of the exhaust flame arrestor grille provided by this utility model;

[0027] Figure 2 A schematic diagram showing the usage state of the exhaust flame arrestor grille provided by this utility model;

[0028] Figure 3 This is a schematic diagram of the limiting plate of the exhaust flame arrestor provided by this utility model;

[0029] Figure 4 An exploded view of the movable explosion-proof plate assembly of the exhaust flame arrestor provided by this utility model;

[0030] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0031] Figure 6 This is a schematic diagram of the spacer assembly of the exhaust flame arrestor grille provided by this utility model.

[0032] Figure label:

[0033] 1-Fire barrier frame;

[0034] 2-Fixed explosion-proof diaphragm assembly;

[0035] 3-Movable explosion-proof plate assembly, 31-First explosion-proof plate, 32-First fixing plate, 33-Sealing plate;

[0036] 4-Partition plate assembly, 41-Partition plate, 42-Base plate;

[0037] 5-Limit plate, 51-First slot, 52-Second slot;

[0038] 6-Card slot;

[0039] 7-Fixing bolts;

[0040] 8-Handle. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] The core of this utility model is to provide an exhaust flame arrester that can be cleaned directly by pulling out the movable explosion-proof plate assembly 3 without disassembling the entire exhaust flame arrester. This is convenient, quick, and greatly simplifies the cleaning process, reducing labor intensity and safety risks associated with disassembling the entire exhaust flame arrester, thus improving cleaning safety. Another core aspect of this utility model is to provide an explosion-proof diesel engine including the aforementioned exhaust flame arrester, improving maintenance efficiency and reducing maintenance costs. Yet another core aspect is to provide a mining auxiliary transportation device including the aforementioned explosion-proof diesel engine, improving equipment utilization and production efficiency.

[0044] Please refer to Figure 1 and Figure 2 An exhaust fire barrier includes a fire barrier frame 1, a fixed explosion-proof plate assembly 2, a movable explosion-proof plate assembly 3, and a spacer plate assembly 4.

[0045] Specifically, the flame arrestor frame 1, as the basic structure of the entire device, provides stable support, ensuring the structural integrity and stability of the entire flame arrestor assembly during operation. The fixed explosion-proof plate assembly 2 is located within the flame arrestor frame 1, ensuring the fixation and stability of its position. The movable explosion-proof plate assembly 3 is intersected with the fixed explosion-proof plate assembly 2, and the gap between them forms an exhaust channel. The spacer assembly 4 is located in the exhaust channel, precisely controlling the size of the gap in the exhaust channel so that the flame in the exhaust gas can be effectively isolated when it passes through the exhaust channel of the exhaust flame arrestor, meeting the explosion-proof requirements and improving the safety of the equipment. The projection portions of the spacer assembly 4 and the movable explosion-proof plate assembly 3 in the direction perpendicular to the plate surface of the spacer assembly 4 overlap, meaning that the spacer assembly 4 only occupies part of the exhaust channel, allowing the remaining exhaust channel to perform its explosion-proof function. The movable explosion-proof plate assembly 3 is removable and installed within the flame arrestor frame 1. When the movable explosion-proof plate assembly 3 is pulled outward, a relative displacement occurs between the movable explosion-proof plate assembly 3 and the fixed explosion-proof plate assembly 2, allowing some carbon soot and sludge between them to be cleaned. At the same time, a relative displacement occurs between the movable explosion-proof plate assembly 3 and the spacer assembly 4. Under the action of the spacer assembly 4, the carbon soot and sludge adhering to the movable explosion-proof plate assembly 3 are cleaned, thus realizing the self-cleaning function of the movable explosion-proof plate assembly 3. This makes the cleaning of the exhaust flame arrestor very convenient. Users can clean it directly by pulling out the movable explosion-proof plate assembly 3 without disassembling the entire exhaust flame arrestor, which is convenient and quick, greatly simplifying the cleaning process. It not only reduces the labor intensity of cleaning but also reduces the safety risks that may arise from disassembling the entire exhaust flame arrestor for cleaning, thus improving the safety of cleaning.

[0046] The exhaust flame arrester installed in the above manner can be cleaned quickly without disassembling the entire exhaust flame arrester, simplifying the cleaning process, reducing the labor intensity of cleaning, and improving the safety of cleaning.

[0047] In the above embodiments, at least two sets of spacer plate assemblies 4 are provided, and at least two sets of spacer plate assemblies 4 are spaced apart along the pull-out direction of the movable explosion-proof plate assembly 3.

[0048] It should be noted that the arrangement of multiple spacer assemblies 4 allows the movable explosion-proof disc assembly 3 to be cleaned in sections during the pulling process. Each time the movable explosion-proof disc assembly 3 is pulled out, a portion of the area can be cleaned, rather than cleaning the entire channel at once. This sectioned cleaning method reduces the resistance of a single cleaning operation and improves cleaning efficiency. The spacer assemblies 4 can more precisely control the gaps within the exhaust channel, ensuring that each gap meets explosion-proof requirements, thereby optimizing gas flow in the exhaust channel, reducing airflow resistance, and improving exhaust efficiency.

[0049] In the above case, a limiting plate 5 is also included. The limiting plate 5 is detachably provided on the movable explosion-proof plate assembly 3 and is movable between two adjacent sets of spacer assemblies 4 to limit the pull-out stroke of the movable explosion-proof plate assembly 3.

[0050] Understandably, the limiting plate 5 is detachably mounted on the movable explosion-proof plate assembly 3 and can move between two adjacent sets of spacer assemblies 4. This allows the limiting plate 5 to precisely control the pulling stroke of the movable explosion-proof plate assembly 3, ensuring that the movable explosion-proof plate assembly 3 does not move excessively during the pulling process, thus avoiding equipment damage or functional failure caused by excessive pulling. The limiting plate 5 effectively prevents the movable explosion-proof plate assembly 3 from moving excessively when pulled outward, preventing the movable explosion-proof plate assembly 3 from accidentally detaching from the flame arrestor frame 1, further enhancing the structural integrity and reliability of the equipment. The setting of the limiting plate 5 makes the pulling process of the movable explosion-proof plate assembly 3 smoother and more controllable, reducing unstable factors during operation and improving the convenience and safety of operation.

[0051] Please refer to Figure 3 and Figure 4 The limiting plate 5 is snapped into the movable explosion-proof plate assembly 3. The movable explosion-proof plate assembly 3 is provided with a snap-fit ​​groove 6 for snapping into the limiting plate 5. The limiting plate 5 is provided with a plurality of first slots 51 that cooperate with the movable explosion-proof plate assembly 3, and also with a plurality of second slots 52 for the fixed explosion-proof plate assembly 2 to pass through. The first slots 51 and the second slots 52 are arranged intersectingly, and their openings are connected to the same side edge of the limiting plate 5.

[0052] It should be noted that when installing the limiting plate 5, it is engaged in the locking groove 6 on the movable explosion-proof plate assembly 3 to fix its position in the pulling direction of the movable explosion-proof plate assembly 3. Simultaneously, the first slot 51 of the limiting plate 5 is engaged on the movable explosion-proof plate assembly 3 to fix its position, allowing the fixed explosion-proof plate assembly 2 to move within the second slot 52 of the limiting plate 5. This design not only improves the structural strength of the limiting plate 5 but also ensures smooth relative movement between the movable explosion-proof plate assembly 3 and the fixed explosion-proof plate assembly 2, reducing operating resistance and improving equipment operating efficiency.

[0053] The limiting plate 5 and the movable explosion-proof plate assembly 3 are connected by a snap-fit ​​mechanism, ensuring that the limiting plate 5 will not loosen during use, thus improving the stability and reliability of the equipment. This connection method is simple and reliable, requiring no additional fasteners and reducing assembly time and costs. The movable explosion-proof plate assembly 3 is equipped with a snap-fit ​​groove 6 for engaging the limiting plate 5, ensuring the accurate installation position of the limiting plate 5 and precisely controlling the pulling stroke of the movable explosion-proof plate assembly 3, preventing equipment damage or malfunction due to excessive pulling. The cross-shaped slot design ensures that the movable explosion-proof plate assembly 3 can smoothly pass through the limiting plate 5 during the pulling process, reducing operating resistance and improving the efficiency of cleaning and maintenance.

[0054] In the above embodiment, the interval between two adjacent first slots 51 and second slots 52 is the same, and the extension length of the second slot 52 on the limiting plate 5 is greater than the extension length of the first slot 51 on the limiting plate 5.

[0055] Understandably, the equal spacing between adjacent first slots 51 and second slots 52 ensures a uniform distribution of slots on the limiting plate 5. This guarantees consistent spacing between each limiting point during the pulling and retraction of the movable explosion-proof plate assembly 3, thereby achieving a uniform limiting function and improving the stability and reliability of the equipment. The extension length of the second slot 52 on the limiting plate 5 is greater than that of the first slot 51, ensuring that the fixed explosion-proof plate assembly 2 can pass smoothly through the limiting plate 5 without being obstructed. This ensures smooth movement of the fixed explosion-proof plate assembly 2 during the pulling and retraction of the movable explosion-proof plate assembly 3, reducing operational resistance.

[0056] Please refer to Figure 1 , Figure 4 and Figure 5 The movable explosion-proof plate assembly 3 includes multiple first explosion-proof plates 31 arranged in parallel and a first fixing plate 32 for fixing the first explosion-proof plates 31. The first fixing plate 32 is provided with multiple first positioning holes that are equally spaced and used to install the first explosion-proof plates 31. The first fixing plate 32 is connected to the fire-resistant grid frame 1 by fixing bolts 7.

[0057] When assembling the movable explosion-proof disc assembly 3, the first explosion-proof disc 31 is inserted into the first positioning hole of the first fixing plate 32. Then, the end of the first explosion-proof disc 31 connected to the first fixing plate 32 is welded and ground flat, making the end face of the first explosion-proof disc 31 flush with the end face of the first fixing plate 32. This enhances structural stability, preventing the explosion-proof disc from loosening or shifting during operation, and improving the overall structural stability of the movable explosion-proof disc assembly 3.

[0058] It should be noted that the first positioning hole is used to control the spacing of the first explosion-proof discs 31, ensuring that the installation positions of the first explosion-proof discs 31 on the first fixing plate 32 are precise and evenly distributed. This ensures that the gap between each first explosion-proof disc 31 is consistent, ensuring more uniform gas flow in the exhaust channel, reducing airflow resistance, and improving exhaust efficiency and explosion-proof effect. The first fixing plate 32 is connected to the flame arrester frame 1 by fixing bolts 7, ensuring the stability of the first explosion-proof disc 31 assembly and improving the structural strength of the entire flame arrester assembly.

[0059] The first fixing plate 32 is fixed to one end face of the sealing plate 33, and a handle 8 is provided on the other end face of the sealing plate 33. The sealing plate 33 is fixed to the fire barrier frame 1 by fixing bolts 7.

[0060] In the above embodiment, the fixed explosion-proof plate assembly 2 includes a plurality of second explosion-proof plates arranged in parallel and a second fixing plate for fixing the second explosion-proof plates. The second fixing plate is provided with a plurality of second positioning holes arranged at equal intervals for installing the second explosion-proof plates. The second fixing plate is connected to the fire-resistant grid frame 1.

[0061] When assembling the fixed explosion-proof plate assembly 2, the second explosion-proof plate is inserted into the second positioning hole of the second fixed plate. Then, the end of the second explosion-proof plate connected to the second fixed plate is welded and ground flat, making the end face of the second explosion-proof plate flush with the end face of the second fixed plate. This enhances structural stability, preventing the explosion-proof plate from loosening or shifting during operation, and improving the structural stability of the entire movable explosion-proof plate assembly 3.

[0062] Understandably, the second positioning hole is used to control the spacing of the second explosion-proof discs, ensuring that the installation positions of the second explosion-proof discs on the second fixing plate are precise and evenly distributed. This guarantees consistent gaps between each explosion-proof disc, ensuring more uniform gas flow within the exhaust channel, reducing airflow resistance, and improving exhaust efficiency and explosion-proof effect. The second fixing plate connects to the flame arrester frame 1, ensuring the stability of the fixed explosion-proof disc assembly 2 and improving the structural strength of the entire flame arrester assembly.

[0063] Please refer to Figure 6The partition plate assembly 4 includes multiple partition plates 41 arranged in parallel and a base plate 42 for fixing the partition plates 41. The base plate 42 is provided with multiple equally spaced third positioning holes for installing the partition plates 41. The base plate 42 is detachably connected to the fire barrier frame 1.

[0064] When assembling the spacer assembly 4, the spacer 41 is inserted into the third positioning hole of the base plate 42. Then, the end of the spacer 41 connected to the base plate 42 is welded and ground flat, so that the end face of the spacer 41 is flush with the end face of the base plate 42. This enhances structural stability, ensuring that the spacer 41 will not loosen or shift during operation, thus improving the overall structural stability of the spacer assembly 4.

[0065] It should be noted that the third positioning hole is used to control the spacing of the partition plates 41, ensuring that the installation position of the partition plates 41 on the base plate 42 is accurate and evenly distributed, so as to ensure that the gap between each partition plate 41 is consistent and to ensure the gap of the exhaust channel. The base plate 42 is detachably connected to the fire barrier frame 1 by bolts, ensuring the stability of the connection of the partition plate assembly 4.

[0066] In one feasible implementation, the overall thickness of the exhaust flame arrestor is 50mm, the thickness of the first explosion-proof plate 31 and the second explosion-proof plate is 1mm, and the first explosion-proof plate 31 and the second explosion-proof plate are arranged in a cross manner. A spacer plate 41 with a thickness of 0.5mm is provided between two adjacent first explosion-proof plates 31 and second explosion-proof plates to limit the explosion-proof gap to 0.5mm, that is, the gap of the exhaust channel is 0.5mm, so as to meet the explosion-proof requirements.

[0067] An explosion-proof diesel engine includes the aforementioned exhaust flame arrester. The structure of other parts of this explosion-proof diesel engine is described in reference to existing technology and will not be repeated here.

[0068] Understandably, the exhaust flame arrester integrated into this explosion-proof diesel engine allows for quick cleaning of the exhaust flame arrester without disassembling the entire grille, simplifying the cleaning process, reducing labor intensity, and improving cleaning safety, thereby increasing the maintenance efficiency and reducing maintenance costs of the explosion-proof diesel engine.

[0069] A mining auxiliary transportation device includes the aforementioned explosion-proof diesel engine. The structure of other parts of this mining auxiliary transportation device is described in reference to existing technologies and will not be repeated here.

[0070] It should be noted that this mine auxiliary transport equipment integrates the aforementioned explosion-proof diesel engine and its exhaust flame arrestor technology, effectively preventing the spread of flames from the exhaust gas into the coal mine roadway environment, significantly improving mine safety and the overall safety of the mine auxiliary transport equipment. The exhaust flame arrestor design of this mine auxiliary transport equipment simplifies the cleaning and maintenance process, reducing maintenance costs. Due to the more efficient cleaning and maintenance process, the downtime of this mine auxiliary transport equipment is significantly reduced, increasing equipment utilization, especially in continuous operation environments such as coal mines, which helps to improve production efficiency.

[0071] In summary, the exhaust flame arrester provided by this utility model has a fixed position for the partition plate 41 when cleaning the exhaust flame arrester. When the movable explosion-proof plate assembly 3 is pulled outward, the partition plate 41 and the movable explosion-proof plate assembly 3 are relatively displaced, the movable explosion-proof plate assembly 3 and the fixed explosion-proof plate assembly 2 are relatively displaced, and the limiting plate 5 and the fixed explosion-proof plate assembly 2 are relatively displaced. This allows the carbon soot and sludge adhering between the movable explosion-proof plate assembly 3 and the fixed explosion-proof plate assembly 2, as well as on the movable explosion-proof plate assembly 3 and the fixed explosion-proof plate assembly 2, to be cleaned and fall into the washing tank. Later, when the washing tank is used for waterproof cleaning, the soot and sludge will flow out with the wastewater, thus achieving the cleaning of the exhaust flame arrester.

[0072] When cleaning the exhaust flame arrestor, there is no need to disassemble the entire flame arrestor assembly. Simply loosen the fixing bolts 7 and pull out the movable explosion-proof plate assembly 3 to easily complete the cleaning of the entire exhaust flame arrestor. This not only simplifies the cleaning process but also significantly improves maintenance efficiency, reduces equipment downtime, lowers maintenance costs, and enhances the reliability and safety of the equipment in complex environments.

[0073] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] The above provides a detailed description of the exhaust flame arrester, explosion-proof diesel engine, and mining auxiliary transportation equipment provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. An exhaust flame arrestor grille, characterized in that, include: Fire barrier frame (1); The explosion-proof plate assembly (2) is fixed inside the fire-resistant grid frame (1); The movable explosion-proof plate assembly (3) is removably disposed within the fire-resistant grid frame (1). The movable explosion-proof plate assembly (3) and the fixed explosion-proof plate assembly (2) are arranged crosswise, and the gap between them is used to form an exhaust channel. The spacer assembly (4) is located in the exhaust channel, and the spacer assembly (4) overlaps with the projection portion of the movable explosion-proof plate assembly (3) in the direction perpendicular to the plate surface of the spacer assembly (4).

2. The exhaust flame arrester according to claim 1, characterized in that, The spacer assembly (4) is provided in at least two sets, and the spacer assembly (4) is provided at intervals along the pull-out direction of the movable explosion-proof plate assembly (3).

3. The exhaust flame arrester according to claim 2, characterized in that, It also includes a limiting plate (5), which is detachably disposed on the movable explosion-proof plate assembly (3) and movablely disposed between two adjacent sets of the spacer plate assemblies (4) to limit the pull-out stroke of the movable explosion-proof plate assembly (3).

4. The exhaust flame arrester according to claim 3, characterized in that, The limiting plate (5) is snapped into the movable explosion-proof plate assembly (3). The movable explosion-proof plate assembly (3) is provided with a snap-fit ​​groove (6) for snapping into the limiting plate (5). The limiting plate (5) is provided with a plurality of first slots (51) that cooperate with the movable explosion-proof plate assembly (3), and also with a plurality of second slots (52) for the fixed explosion-proof plate assembly (2) to pass through. The first slots (51) and the second slots (52) are arranged crosswise, and their openings are connected to the same side edge of the limiting plate (5).

5. The exhaust flame arrester according to claim 4, characterized in that, The interval between two adjacent first slots (51) and second slots (52) is the same, and the extension length of the second slot (52) on the limiting plate (5) is greater than the extension length of the first slot (51) on the limiting plate (5).

6. The exhaust flame arrester according to any one of claims 1-5, characterized in that, The movable explosion-proof plate assembly (3) includes a plurality of first explosion-proof plates (31) arranged in parallel and a first fixing plate (32) for fixing the first explosion-proof plates (31). The first fixing plate (32) is provided with a plurality of first positioning holes arranged at equal intervals for installing the first explosion-proof plates (31). The first fixing plate (32) is connected to the fire-resistant grid frame (1) by fixing bolts (7).

7. The exhaust flame arrester according to any one of claims 1-5, characterized in that, The fixed explosion-proof plate assembly (2) includes a plurality of second explosion-proof plates arranged in parallel and a second fixing plate for fixing the second explosion-proof plates. The second fixing plate is provided with a plurality of second positioning holes arranged at equal intervals for installing the second explosion-proof plates. The second fixing plate is connected to the fire-resistant grid frame (1).

8. The exhaust flame arrester according to any one of claims 1-5, characterized in that, The partition plate assembly (4) includes a plurality of partition plates (41) arranged in parallel and a base plate (42) for fixing the partition plates (41). The base plate (42) is provided with a plurality of equally spaced third positioning holes for installing the partition plates (41). The base plate (42) is detachably connected to the fire barrier frame (1).

9. An explosion-proof diesel engine, characterized in that, Includes the exhaust flame arrester as described in any one of claims 1 to 8.

10. A mining auxiliary transportation device, characterized in that, Including the explosion-proof diesel engine as described in claim 9.

Images